interface USB{
    void name();
    void shape();
}
public class Mouse implements USB{
    @Override
    public void name() {
        System.out.println("鼠标");
    }

    @Override
    public void shape() {
        System.out.println("手掌大小");
    }

    public static void main(String[] args) {
        Mouse mouse = new Mouse();
        mouse.name();
        mouse.shape();
    }
}
